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Description: English: section of wood of Eysenhardtia polystachya, with infusions of sap-wood and heart-wood. Date: 1916. Source: Safford, William Edwin (1916). "Lignum nephriticum". Annual report of the Board of Regents of the Smithsonian Institution. Washington: Government Printing Office. p. 271–298. Author: Safford, William Edwin.
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Description: English: Extracts of Eysenhardtia wood as seen against the light and against a dark background. Date: 1916. Source: Safford, William Edwin (1916). "Lignum nephriticum". Annual report of the Board of Regents of the Smithsonian Institution. Washington: Government Printing Office. p. 271–298. Author: Safford, William Edwin.
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Description: English: Section of wood of Eysenhardtia polystachya, with infusions of sap-wood and heart-wood. Date: 1916. Source: Safford, William Edwin (1916). "Lignum nephriticum". Annual report of the Board of Regents of the Smithsonian Institution. Washington: Government Printing Office. p. 271–298. Author: Safford, William Edwin.
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Description: English: Eysenhardtia polystachya. Date: 1916. Source: Safford, William Edwin (1916). "Lignum nephriticum". Annual report of the Board of Regents of the Smithsonian Institution. Washington: Government Printing Office. p. 271–298. Author: Safford, William Edwin.
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Description: English: Eysenhardtia polystachya. Date: 1916. Source: Safford, William Edwin (1916). "Lignum nephriticum". Annual report of the Board of Regents of the Smithsonian Institution. Washington: Government Printing Office. p. 271–298. Author: Safford, William Edwin.
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Description: English: Extracts of Eysenhardtia wood as seen against the light and against a dark background. Date: 1916. Source: Safford, William Edwin (1916). "Lignum nephriticum". Annual report of the Board of Regents of the Smithsonian Institution. Washington: Government Printing Office. p. 271–298. Author: Safford, William Edwin.